Pneumatic gong



R. D. CONKLIN PNEUMATIC GONG Nov. 10, 1931.

Filed March 26, 1931 2 Sheets-Sheet l .,1n11/111lrlllllllllllllllllllllQ IIIIIIII'II'II awe/wile: R scoe 0. Con K M @313 hkmbo'mwngfi l #8 l Nov;v 10, 1931'. R. p. CONKLIN r l 3 7 PNEUMATI C GONG File q March 26 1951 2 Sheets-Sheet 2 gwuwwboz J mg? cozaconklin 351;; E15 511M4 (Ag Patented Nov. 10, 1931 UNITED STATES P TENT OFFICE nosoon n. CONKLIN, or RAI-IWAY, NEW JERSEY, AssIGNon T0 NATT ONAL rnnnnn rlo company, on NEW YORK, n. Y., A CORPORATION or was]: VIRGINIA rnnnivrn'rrc' GONG Application filed March 26, 1931 Serial No. 525,368. f.

This invention relates in general to improvements in pneumatically operated gongs or bells.

One of the objects of this invention is the provision matically operated gong or bell in which the structural features thereof are characterized by simplicity of form and structure.

One of the objects of this invention involves the combination with a gong of a simple air turbine by means of which the gong may be set into vibration.

A further object of this invention involves the construction of this type in which the air inlet and exhaust ports are of such size and form as to prevent freezing of the device when used out of doors during cold weather.

These and other objects as will appear from the following disclosure are secured by means of this invention.

This invention resides substantially in the combination, construction, arrangement and relative location of parts all as will be described in detail below.

Referring to the drawings,

Figure 1 is a vertical cross-sectional view through the structure of this invention;

Fig. 2 is an enlarged side elevational view of the turbine, striker and'support showing the interior of the turbine casing open along the line 22 of Fig. 1;

Fig. 3 is an enlarged plan view showing the relative arrangement of the turbine striker and gong with some parts broken away.

Referring to the drawings the device is shown comprising a bell or gong, one made of a suitable resistant material such as brass or bronze which fits over a spindle 2 having a reduced threaded portion 4 passing through the gong. The gong is held on the spindle by means of a nut 5. The spindle 2 is integral with a plate 3 which forms the cover of the turbine casing 6. Within the casing on a short spindle 8 are mounted the turbine blades 9 for rotation therewith. The spindle 8 extends exteriorly of the turbine casing and has secured thereto a suitably shaped cam 10. Attached to the turbine casing in any suitable manner is a depending plate 11 provided of an exceedingly simple pneu-' with right-angled-fianges 11 in which is I.

mounted for vertical reciprocation the clapper or striker rod 12. The lower end of'this rod terminates near the inner surface of the gong 1 and has at its other end an enlarged portion 13 which cooperates with the cam 10 as will be described later. The striker rod 12 is enclosed within a spring 14 which lies against the lower flange 11 and against'the enlarged head 13 so that it is compressed with the rod 12 and is forced downwardly. The turbine casing is provided with threaded studs '7 by means of which the entire structure may be mounted on any suitable support At 15 is an air pipe leading into the turbine casing tangentially., At 20 are the air exhaust ports from the turbine casing. Intheoperation of the device fluid pres-v sure such as compressed air is delivered into the turbine casing through the pipe connection 15. The movement of the air through the'turbine casing causes the rotor blades 9 to revolve carrying with them the spindle 8 and the cam 10. The air exhausts out of the casing through the ports 20. The air inlet pipe 15 and the discharge ports 20 are of such size that they will not easily be clogged in cold weather by thefreezing of the condensed moisture therein. As cam 10 revolves,

it being shaped as shown in Fig. 3, it causes a vertical reciprocation of the striker rod 12.

'For each downward movement of this rod the end thereof strikes the gong once so that the gong is set iii-vibration as the turbine revolves.

From the foregoing disclosure it will be apparent that the device of this invention is exceedingly simple in construction and operation and hence is very rugged. The principles of construction involved in this invention may be employed in other physical forms and I do not, therefore, desire to be strictly limited to the disclosuregiven for purposes of illustration but rather to the scope of the appended claims.

What I seek to secure by United Letters Patent is:

1. A pneumatic bell of the type described, comprising in combination a gong, longitudinally reciprocal strikermeans supported States loo 3. A device of the type described, compris ing a dish-shaped gong, a turbine housing se-' cured to the gong Within the dished portion, a H

rotor journalled within the casing "and extending exterio-rly thereof, a cam secured to the exteriorly extending end-0f the shaft, a

reciprocal striker mounted so as to be engaged by the cam as it revolves, and resilient means arranged so as,- to tendto move the striker away from the gong; v

4. A device of the type described, comprising in'combination a vibratory gong, a turbine securedto said gong, said turbine-including a rotatable shaft, a cam secured to said shaft, a striker, means for supporting the striker for reciprocation under the action of saidcam and a spring. forresisting the movement of the striker under the action of the scam. p A

' In testimony whereof I have hereunto set ROSCOE n GONKLIN.

my hand on this 24th day of March,A. 1)., p p 1931. i 

